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-7w-2=4w+9
We move all terms to the left:
-7w-2-(4w+9)=0
We get rid of parentheses
-7w-4w-9-2=0
We add all the numbers together, and all the variables
-11w-11=0
We move all terms containing w to the left, all other terms to the right
-11w=11
w=11/-11
w=-1
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